Fig. 1.Location map showing generalized geology of northern New Brunswick. PB, Pentland Brook area; RBMF, Rocky Brook – Millstream Fault; BPABF, Black Point – Arleau Brook Fault; MGF, McKenzie Gulch Fault; MH, Miramichi Highlands; EI, Elmtree Inlier; PI, Popelogan Inlier; (inset): CB, Chaleur Bay Synclinorium; AP, Aroostook–Percé Anticlinorium; CG, Connecticut Valley – Gaspé Synclinorium. The Miramichi Highlands and Elmtree Inlier are underlain by Cambrian to Middle Ordovician rocks of the Tetagouche–Exploits back-arc basin, and the Popelogan Inlier by Ordovician rocks of the Popelogan–Victoria arc. Superscripts on radioisotopic dates indicate sources of data: 1, this paper; 2, Wilson and Kamo 2008; 3, Wilson et al. 2008.
Fig. 2.Chaleurs Group stratigraphic columns for the southern Gaspé Peninsula (Burk 1964; Bourque 1975; Bourque and Lachambre 1980; Bourque et al. 1995, 2001) and as hitherto understood in northern New Brunswick (Walker and McCutcheon 1995). Time scale and stage boundaries are from Walker and Geissman (2009).
Fig. 3.Overprinting of northwest-trending fold without cleavage by northeast-trending Acadian folds and cleavage in the Late Ordovician to Early Silurian White Head Formation at Oakville (see Fig. 1 inset for location). Field of view in photo is about 5 m.
Fig. 4.Geology of the Kedgwick area, northern New Brunswick, modified after Carroll (2003), showing the interference pattern created by overprinting of Salinic folds (F1) by Acadian folds (F2). See Fig. 1 inset for location.
Fig. 8.Cobble–boulder limestone conglomerate at contact between the La Vieille Formation and the Bryant Point Formation on the east side of Black Point. See Fig. 1 for location. The length of the hammer is 41 cm.
Fig. 9.Limestone breccia–conglomerate at contact between the La Vieille Formation (right) and the Simpsons Field Formation (left) on the south side of Limestone Point (see Fig. 1 for location). The length of the hammer is 41 cm.
Fig. 11.U–Pb concordia diagrams for felsic volcanic rocks from (a) the base of the Bryant Point Formation, and (b) the top of the Benjamin Formation. The grey band that straddles the concordia curve represents the uncertainties in the two U decay constants.
Fig. 12.Simplified geological map of northern New Brunswick showing location and distribution of newly named higher rank units comprising formations formerly included in the Chaleurs Group. The Indian Point and West Point formations southwest of Campbellton remain in the Chaleurs Group because they are contiguous with rocks in Québec that are defined at the Chaleurs Group type locality. MH, Miramichi Highlands; EI, Elmtree Inlier; PI, Popelogan Inlier; BPABF, Black Point – Arleau Brook Fault.
Fig. 13.Stratigraphic correlation chart showing Silurian stratigraphy in four areas of the Chaleur Bay Synclinorium, and the range of three Salinic depositional breaks (Salinic A, B, C) in northern New Brunswick. Time scale and stage boundaries are from Walker and Geissman (2009). See Fig. 1 for key to symbols and abbreviations not explained in map legend.